Reinforced spring



G. TREMOLADA. REINFORCED SPRING.

APPLICATION FILED NOV- 14, I917- Pawnted Oct. 4, 1921.

UNITED STATES PATENT OFFICE.

GUGLIELMO TREMOLADA, OF DETROIT, MICHIGAN, ASSIGITOR OF ONE-HALF TOMICHAEL BARONI, OF WINNIPEG, MANITOBA, CANADA.

REINFORCED SPRING.

1 '0 all whom, it may concern: 1

Be it known that I, GUcLIELMo TREMO- LADA, a subject of the King ofItaly, residing at the city of Detroit, in the State of Michigan, haveinvented certain new and useful Improvements in Reinforced Springs, ofwhich the following is a specification.

' This invention relates to the production of an article of manufacturewhich is of resilient quality in cross section but which is nonresilientinlongitudinal direction, the said article being capable of a variety ofapplications, a number of which with their objects, will be found firstfully described in the following specification and the means by whichthe said objects are attained then more particularly pointed out in theappended claims, reference also being had to the accompanying drawingsin which similar characters of reference indicate similar partsthroughout the different views, and in which- Figure 1 shows a solidcore having a spring closely wound therearound to form a member such asis described in thepreamble.

Fig. 2 shows a similar core member having a spring of open windingcoiled therearound, the spring being shown partly in section.

Fig. 3 is a sectional end view of the subject matter of the inventionhaving a three strand core.

Fig. 4 shows a plurality of the reinforced springs interwoven inthemanner of a fabric.

Fig. 5 is a section taken on the the line 5-5 in Fig. 4.

Fig. 6 shows layers of the springs superposed on each other with a sheetof fabric interposed between the layers, the whole being vulcanizedtogether.

Fig. 7 is a section on the line 77 in Fig. 6.

Fig. 8 shows a plurality of the spring meiibers woven with a warp ofordinary cor Fig. 9 is-a section taken on the line 9-9 plane of in Fig.8.

Fig. 10 is a cross section of an automobile tire having the springsincorporated therein, the said section being taken on the plane of theline 10-10 in Fig. 11.

Fig. 11 is a section of the tire taken on the.

line ll ll in Fig. 10,

Specification of Letters Patent.

Fig. 12 shows a plurality of the spring members superposed in paralleland with a fabric interposed between.

Fig. 13 shows a plurality of the spring members superposed but withoutthe dividing fabric.

As is clearly shown in the drawings, the article consists of a coremember 1 preferably of vegetable fiber, which may be single, solid andflexible as shown most .clearly in Figs. 1 and 2, or it may .be formedfrom a plurality of strands 2, twisted together in the manner of a ropeas is shown in Fig. 3. A spring 3 is helically wound tightly around thecore 1, the convolutions of the spring being preferably contacting as isshown in Fig. 1, though they may in certain cases be separated as isshown in Fig. 2, and the ends of the core 1 may of course extend beyondthe ends of the spring to any desired extent. The member so built up andindicated as a whole by the letter A, is flexible in all directions andresiliently responsive in cross dimension, and its diameter may varyfrom that of a very fine cord upwardly, this being governed by itsfuture application.

In Figs. 4 and 5 a plurality of the members A are shown woven togetherto form a fabric, the said members in this instance forming both thewarp and woof of the structure. Experiments with a fabric formed in thismanner have shown that it will successfully resist a revolver bulletfired at a distance of thirty feet, thus establishing a value for thedevice in modern warfare.

In Figs. 6 and 7 the members A are superposed in layers at right anglesto each other, a piece of fabric 5 being interposed between the layersand the whole vulcanized together to form a resilient waterproof fabricsuitable for a number of purposes which will readily occur to personsskilled-in the art to which such things pertain.

Figs. 8 and 9 show the spring members A woven with a warp 6 of ordinarytype, this constructionalso lending itself to vulcanizing purposes.Figs. 12 and 13 are also examples of possible combinations forvulcanizing purposes.

In Figs. 10 and 11, 7 indicates the tread portion of an automobile tirecover and 8 the sides of the same. The spring members A it will benoted, are preferably placed Patented Oct. 4, 1921. Application filedNovember 14, 1917. Serial No. 202,026.

tire fabricas is indicated at 10. The mem- V bers A are preferablyplaced in the tire intwo or more tiers or layers, so that they not onlyadd to the shock absorbing qualities of the tire, but also serve, bytheir proximity to each other and the fact that the joints between themembers of each row are covered by those of the succeeding row or rows,to prevent puncturing. I

While a' variety of applications of the article have been shown in thedrawings, no attempt has been made to exhaust such instances, nor toshow the variety of ways in which the article might be made; it is ofcourse preferable that the spring should be made from finely temperedsteel, but material is not an essential feature of the device and othermetals might be substituted. Then the spring is made from'steel the mostoutstanding usefulness for the article would appear to be in connectionwith the manufacture of automobile tires and bullet proof clothing, andthe fact thatmore than one spring could .becoiled on the same core is ofcourse obvious.

Having thus fully described my said in-V vention, what I elalm is 1. Avehicle tire providing a tread portion having a plurality of resilientmembers incorporated thereinto each comprising a core of flexiblenonelastic material having its ends interwoven with the fabric. of thetire and a wire spring coiled around its medial portion. 2. A vehicletion having a plurality of resilient members tire providing a tread por-A vulcanized thereinto inla'yers, the members a of each layer breakingthe joints between those of the next layer, and each of the said memberscomprising a flexible nonelastic' core having-its endsformlng part of'the tire fabric and awire' springfcoile'd tightly around its medialportion. 7

In testimony whereof I affix my signature.

i eUe IE Mo :rRE oLAnA.

